  Convective drying of wastewater sludge: Introduction of shrinkage effect in mathematical modelingBennamoun, Lyes  ; Crine, Michel ; Léonard, Angélique in Drying Technology (2013), 31(6), 643-654 Detailed reference viewed: 2 (0 ULg) Determination of Moisture Diffusivity During Drying of Mortar Cement: Experimental and Modeling StudyBennamoun, Lyes ; Kahlerras, Loubna ; Michel, Frédéric et alin International Journal of Energy Engineering (2013), 3(1), 1-6 The aim of this study is the experimental characterization of the behaviour of a mortar during convective drying. We focalise on mortar that has a rate water-cement of 0.5. The drying tests are developed ... [more ▼] The aim of this study is the experimental characterization of the behaviour of a mortar during convective drying. We focalise on mortar that has a rate water-cement of 0.5. The drying tests are developed in a micro-convective dryer that can use samples weighing from 0 to 8g. The advantage of these experiments is to reproduce the natural conditions that can be found during the treatment of the mortar-atmosphere problems. The response of the drying curve or the drying kinetic depends on the applied drying conditions. So, the temperature of the air varies from 60°C to 130°C, the velocity of the air is changed from 2 m.s-1 to 5 m. s-1and the relative humidity is kept less than 1.7%. The comparison between the experimental results and the proposed analytical solutions of the equation of diffusion represented by Fick’s law, applied for a finite shape, allows determination of the values of the diffusion coefficient. It has a value of 1.71×10-10 m2.s-1 at 60°C, 13.69×10-10 m2.s-1 at 90°C and 16.27×10-10 m2.s-1 at 130°C. Calculation of the activation energy and the D0 constant are also possible. [less ▲] Detailed reference viewed: 85 (27 ULg) MODELING WASTEWATER SLUDGE DRYING WITH DETERMINATION OF DIFFUSIVITY MOISTUREBennamoun, Lyes ; Fraikin, Laurent ; Salmon, Thierry et alScientific conference (2012, September 06) Convective drying of two different types of wastewater sludges is investigated. Experiments are realised in a micro-dryer, for air temperatures of 80 °C, 140 °C and 200 °C, the velocity and humidity ... [more ▼] Convective drying of two different types of wastewater sludges is investigated. Experiments are realised in a micro-dryer, for air temperatures of 80 °C, 140 °C and 200 °C, the velocity and humidity remaining the same. The product drying kinetics presents, for all studied cases, three main phases, which are: adaptation phase, constant drying rate phase and falling drying rate. A comparison between two mathematical approaches allows determination of the diffusion coefficient. The value of this coefficient depends on the origin of the wastewater sludge and the operating temperatures. Physical changes such as shrinkage are introduced into the mathematical model. [less ▲] Detailed reference viewed: 58 (17 ULg)Experimental study and modeling the behavior of a solar water heater tested at the regions of Adrar, Algeria; ; et al in International Journal of Advanced Renewable Energy Research (2012), 1(8), 460-466 Detailed reference viewed: 23 (5 ULg)An overview on application of exergy and energy for determination of solar drying efficiencyBennamoun, Lyes in International Journal of Energy Engineering (2012), 2(5), 184-194 Detailed reference viewed: 21 (5 ULg)Experimental study and modeling of sorption isotherms of Kabar Sid El Cheikh Capparis spinosa L. from Bechar (South west Algeria); ; Bennamoun, Lyes et alin Energy Procedia (2012), 18 Detailed reference viewed: 36 (3 ULg)Solar drying of wastewater sludge: A ReviewBennamoun, Lyes in Renewable & Sustainable Energy Reviews (2012), 16(1), 1061-1073 Detailed reference viewed: 51 (13 ULg)Reviewing the experience of solar drying in Algeria with presentation of the different design aspects of solar dryers,Bennamoun, Lyes in Renewable & Sustainable Energy Reviews (2011), 15(7), 3371-3379 Detailed reference viewed: 16 (2 ULg)Study of solar thermal energy in the north region of Algeria with simulation and modeling of an indirect convective solar drying systemBennamoun, Lyes ; in Nature &Technology (2011), 4 Detailed reference viewed: 9 (2 ULg)Application of a diffusion model to predict drying kinetics changes under variable conditions: experimental and simulation studyBennamoun, Lyes ; ; in Fluid Dynamics and Materials Processing (2009), 5(2), Detailed reference viewed: 14 (3 ULg)Analyse des transferts couplés de chaleur et de masse pendant le séchage des figues; ; Bennamoun, Lyes in Revue Algérienne de Physique (2009) Detailed reference viewed: 42 (10 ULg)Mathematical description of heat and mass transfer during deep-bed drying: effect of product shrinkage on bed porosityBennamoun, Lyes ; in Applied Thermal Engineering (2008), 18(17-18), 2236-2244 Detailed reference viewed: 8 (1 ULg)Study of heat and mass transfer in porous media: application to packed-bed dryingBennamoun, Lyes ; in Fluid Dynamics and Materials Processing (2008), 4(4), 221-230 Detailed reference viewed: 5 (2 ULg)Étude d’un séchoir solaire fonctionnant en mode direct et indirect; ; Bennamoun, Lyes in Revue des Energies Renouvelables (2008) Detailed reference viewed: 26 (2 ULg)Contribution à l’étude de faisabilité de séchoirs solaires pour les produits agricolesBennamoun, Lyes ; in Revue des Energies Renouvelables (2007) Detailed reference viewed: 16 (2 ULg)Numerical simulation of drying under variable external conditions: application to solar drying of seedless grapesBennamoun, Lyes ; in Journal of Food Engineering (2006), 76(2), 179-187 Detailed reference viewed: 4 (1 ULg)Design and simulation of a solar dryer for agriculture productsBennamoun, Lyes ; in Journal of Food Engineering (2003), 59(2-3), Detailed reference viewed: 13 (3 ULg) |
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